Solid carbide threading tools Recommended cutting data Solid carbide threading tools A Starting values for cutting speed vc [m/min] Thread former Thread tap Thread milling Machining group Brinell 4122A 4122M 4201C 4201A 4202C 4202A 4111 Material group Composition / structure / heat treatment hardness 4222A 4222M HB YK40F YK40F YK40F YK40F YK40F YK40F KTG4015 Turning Coolant External External External External External External External f-group approx. 0,15 % C annealed 125 1 20 100 1 approx. 0,45 % C annealed 190 2 20 90 1 Unalloyed steel approx. 0,45 % C tempered 250 3 20 80 1 approx. 0,75 % C annealed 270 4 20 70 1 approx. 0,75 % C tempered 300 5 20 70 1 B P Low-alloyed steel annealed tempered 180 275 6 7 20 20 90 70 1 1 tempered 300 8 20 60 1 tempered 350 9 20 55 1 High-alloyed steel and high- annealed 200 10 20 80 1 alloyed tool steel hardened and tempered 325 11 20 50 1 Milling ferritic/martensitic annealed 200 12 20 martensitic tempered 240 13 20 M Stainless steel austenitic quench hardened 180 14 20 austenitic-ferritic 230 15 20 perlitic/ferritic 180 16 20 20 80 1 Grey cast iron perlitic (martensitic) 260 17 20 20 60 1 ferritic 160 18 C Cast iron with spheroidal 15 15 80 1 K graphite perlitic 250 19 15 15 60 1 ferritic 130 20 20 20 60 1 Malleable cast iron perlitic 230 21 20 20 80 1 cannot be hardened 60 22 180 1 Aluminium wrought alloys hardenable hardened 100 23 150 1 Drilling ≤ 12 % Si, cannot be hardened 75 24 30 30 30 30 150 1 Cast aluminium alloys ≤ 12 % Si, hardenable hardened 90 25 25 25 25 25 150 1 N > 12 % Si, cannot be hardened 130 26 150 1 machining steel, PB> 1% 110 27 150 1 Copper and copper alloys CuZn, CuSnZn 90 28 150 1 (bronze/brass) CuSn, Pb-free copper, electrolytic copper 100 29 150 1 annealed 200 30 Fe-based alloys D Heat-resistant alloys hardened annealed 280 250 31 32 S Ni or Co bass hardened 350 33 cast 320 34 pure titanium Rm 400 35 Information Titanium alloys Technical α and β alloys hardened Rm 1050 36 hardened and tempered 55 HRC 37 Hardened steel hardened and tempered 60 HRC 38 H Hard cast iron cast 400 39 Hardened cast iron hardened and tempered 55 HRC 40 Thermoplasts 41 Thermosetting plastics 42 Plastic, glass-fibre reinforced GFRP 43 E X Non-metallic materials Plastic, carbon fibre reinforced CFRP Graphite 44 45 Wood 46 Note: The given cutting values are guide values, which were determined under ideal conditions. The values have to be adapted in individual cases. With hole depths of 5xD adjust the cutting data accordingly to the application. f-group = feed rate recommendations on page C164. Index For examples of material for cutting tool groups view page D22. C 162